Hybrid tea rose plant named `TANaledev`

ABSTRACT

Hybrid tea rose plant having an attractive ivory white flower color; large flowers on long stems; long vase life; and good cut flower production.

The present invention relates to a new and distinct variety of roseplant of the hybrid tea class which was originated by me by crossing anunnamed white hybrid tea seedling (not patented), the parentage of whichis not known, with TANweisa (not patented).

The primary objective of this breeding was to produce a new rose varietyhaving novel ivory white flowers, long stems, good cut flowerproduction, long vase life and large flower size. The objective wassubstantially achieved, along with other desirable improvements, asevidenced by the following unique combination of characteristics thatare outstanding in the new variety and that distinguish it from itsparents, as well as from all other varieties of which I am aware:

1. Ivory white flower color;

2. Long stems;

3. Large flower size;

4. Good cut flower production;

5. Exceptionally long vase life.

TANaledev produces 170-180 long stems/m², when grown in a greenhouse,bearing ivory white flowers.

Asexual reproduction of this new variety by budding, as performed atWasco, Calif., and Uetersen, Germany, shows that the foregoing and allother characteristics and distinctions come true to form and areestablished and transmitted through succeeding propagations.

The accompanying illustration shows typical specimens of the vegetativegrowth and flowers of this new variety in different stages ofdevelopment, depicted in color as nearly true as it is reasonablypossible to make the same in a color illustration of this character.

The following is a detailed description of my new rose cultivar withcolor descriptions using terminology in accordance with The RoyalHorticultural Society (London) Colour Chart, except where ordinarydictionary significance of color is indicated.

Parentage:

Seed parent.--Unnamed white hybrid tea seedling (not patented), theparentage of which is not known.

Pollen parent.--TANweisa (not patented).

Classification:

Botanical.--Rosa hybrida.

Commercial.--Hybrid tea.

Flower

Observations made from specimens grown in greenhouse environments atUetersen, Germany, and at Somis, Calif., from January 1997 to January1998.

Blooming habit: Continuous.

Bud:

Size.--13/4" long when the petals start to unfurl.

Form.--Long, pointed ovoid.

Color.--When sepals first divide, bud color is Yellow White Group 158C.When half blown, the upper sides of the petals are Yellow White Group158C, the lower sides of the petals are Yellow White Group 158C.

Sepals.--Color: Green Group 138B. Surface texture: Covered in finehairs. There are three normally to heavily appendaged sepals. There aretwo unappendaged sepals with hairy edges.

Receptacle.--Color: Green Group 143C. Shape: Funnel. Size: Small(3/8"×1/4"). Surface: Smooth.

Peduncle.--Length: Long (51/2"). Surface: Slightly prickly. Color:Medium green. Strength: Stiff, erect.

Bloom:

Size.--Large. Average open size is 4 to 41/2".

Borne.--Singly.

Stems.--Long (26-30"), strong.

Form.--When first open: High centered. Permanence: Retains its form tothe end, outer petals curl back, quill fashion.

Petalage.--Number of petals under normal conditions: 30-35.

Color.--The upper sides of the petals are Yellow White Group 158C. Thereverse sides of the petals are Yellow White Group 158C. The base ofeach petal has a small (3/16"×3/16") Yellow Green Group 149D half moonat the point of attachment. The major color on the upper sides is YellowWhite Group 158C.

Variegations.--Occasional greenish streak on the guard petals.

Discoloration.--There is no change in color as the flower opens on theplant or in the vase until petal drops.

Fragrance.--Slight.

Petals:

Texture.--Thick.

Shape.--Rounded.

Form.--Tips slightly recurved, edges slightly quilled.

Arrangement.--Imbricated. Petaloids in the center: None.

Persistence.--Petals drop off cleanly before drying.

Lastingness.--On the plant: Very long (10-12 days). As a cut flower:Very long (16-18 days).

Reproductive parts:

Anthers.--Size: Medium. Quantity: Many. Color: Yellow. Arrangement:Regular around styles.

Filaments.--Color: White.

Pollen.--Color: Lemon yellow.

Styles.--Color: White.

Stigmas.--Color: Greenish white.

Plant:

Form.--Bush.

Growth.--Very vigorous; upright; branching. At maturity, height is sixfeet, width is four feet.

Foliage:

Number of leaflets on normal mid-stem leaves.--Five.

Size.--Large (61/2"×41/2").

Quantity.--Abundant.

Color.--New foliage: Upper and lower sides: Greyed Red Group 178C, veryquickly turning the green color of the mature leaf. Old foliage: Upperside: Green Group 139A.

Leaflets: Lower side: Green Group 139C.

Shape.--Pointed oval.

Texture.--Upper side: Smooth.

Edge.--Serrated.

Serration.--Single, small.

Petiole rachis.--Color: Green.

Petiole underside.--Rough with prickles.

Stipules.--Long (5/8"), serrated, bearded.

Disease resistance.--Resistant to mildew under normal growing conditionsat Somis, Calif. and Uetersen, Germany.

Wood:

New wood.--Color: Reddish. Bark: Smooth.

Old wood.--Color: Green. Bark: Smooth.

Prickles:

Quantity.--On main canes from base: Ordinary. On laterals from maincanes: Ordinary.

Form.--Medium, hooked downward.

Color when young.--Red.

Small prickles:

Quantity.--On main stalks: None. On laterals: None.

I claim:
 1. A new and distinct variety rose plant of the hybrid teaclass, as herein shown and described, characterized particularly by theunique combination of its attractive ivory white flower color; largeflowers on long stems; long vase life; and